Emergy and emergy algebra explained by means of ingenuous set theory

Bastianoni, Simone; Morandi, Fabiana; Flaminio, Tommaso; Pulselli, Riccardo Maria; Tiezzi, Enzo

doi:10.1016/j.ecolmodel.2011.05.013

Cited by 44 publications

(16 citation statements)

References 9 publications

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“…This model demonstrated that indices cannot be passed through the levels with invariant formulations. Bastianoni et al (2011) proposed that emergy can be understood as a set: this insight gives rise to a new representation of systems using set theory that is consistent with the emergy literature and the way Odum described the use of the Energy Systems Language and, moreover, it makes more comprehensible and correct both the definition of emergy and its evaluation. In this way, in fact, all processes and flows in the system are represented by a set and the total emergy of the system is given by…”

Section: Epp = Total Emergy Flow Populationmentioning

confidence: 83%

Emergy evaluation of hierarchically nested systems: application to EU27, Italy and Tuscany and consequences for the meaning of emergy indicators

Morandi

Campbell

Pulselli

et al. 2015

Ecological Modelling

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Section: Epp = Total Emergy Flow Populationmentioning

confidence: 83%

Emergy evaluation of hierarchically nested systems: application to EU27, Italy and Tuscany and consequences for the meaning of emergy indicators

Morandi

Campbell

Pulselli

et al. 2015

Ecological Modelling

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“…Larger issue of critically review other approaches to emergy algebra such as e.g. Bastianoni et al (2011), Kazanci et al (2012, Li et al (2010), Mu et al (2012) and references therein is future work.…”

Section: Resultsmentioning

confidence: 99%

Odum–Tennenbaum–Brown calculus vs emergy and co-emergy analysis

Corre

Truffet

Lahlou

2015

Ecological Modelling

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“…Without the solar system, the payback time would decrease from 1.28 years to 1.07 years. In (Odum, 1996) Sewage treatment g 1.12 Â 10 7 (Bastianoni et al, 2011) addition, the omission of the solar power system would cause a small increase in the carbon footprint (0.002%) and emergy (0.0015%) because the electric supply is only a small component compared with the whole system. As a comprehensive consideration, we suggest that a CIES without a solar power system may be more efficient as an economy-environment benefit.…”

Section: A Cheaper Cost Without the Solar Power Systemmentioning

confidence: 98%

Courtyard integrated ecological system: An ecological engineering practice in China and its economic-environmental benefit

Han

Ouyang

Liu

et al. 2016

Journal of Cleaner Production

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a b s t r a c tRural residential areas and low resident density areas are usually distressed by the lack of municipal infrastructure, which causes a poor supply of water and energy, as well as a shortage of the waste and pollution disposal equipment The courtyard integrated ecological system (CIES) is an example of an ecological engineering solution to this problem. CIES originated in the Hainan rural area of China. This family level symbiotic system was designed by the authors according to a few sustainable principles, such as making good use of local natural resources, low cost, convenience of operation, and resource recycling. CIES systematically integrated a series of single techniques, such as vertical planting, hydroponic farming, artificial wetland, rainwater harvesting and automatic management, and so on. After a brief introduction of the CIES design, this article also studied its economic-environmental benefit with one year of monitoring data and a comparison between the CIES pattern and traditional pattern with both emergy analysis and carbon footprint analysis methods. The results showed that CIES could provide an increase of 75 m 2 of green land, 40 m 3 of green volume and 2400 kg of vegetables for each rural family. In addition, each family could save 277 kWh of electric power, 70.87 t of fresh water, 7.5 kg of chemical fertilizer and 450 g of pesticides each year. Additionally, counting the money saved, each CIES can produce more than 38,000 RMB after 1.28 years of payback. Compared to the traditional living pattern in a local area, the CIES pattern costs only 19.4% of the former's emergy and 49.6% of the carbon footprint of the traditional living pattern. Assuming that CIES is applied to half of the rural households in Hainan Province, each farmer would receive an extra 2842 RMB for each year, the emergy consumed by the system would be reduced by 1.6 Â 10 21 sej, and CO 2 emissions would be reduced by 1.036 Â 10 5 t.

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Emergy and emergy algebra explained by means of ingenuous set theory

Cited by 44 publications

References 9 publications

Emergy evaluation of hierarchically nested systems: application to EU27, Italy and Tuscany and consequences for the meaning of emergy indicators

Emergy evaluation of hierarchically nested systems: application to EU27, Italy and Tuscany and consequences for the meaning of emergy indicators

Odum–Tennenbaum–Brown calculus vs emergy and co-emergy analysis

Courtyard integrated ecological system: An ecological engineering practice in China and its economic-environmental benefit

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